ref: 042f98784acb9f09013f65b0c93b7f56e1b8a10a
dir: /sys/src/cmd/auth/secstore/util.c/
#include <u.h> #include <libc.h> #include <mp.h> #include <libsec.h> #include "SConn.h" #include "secstore.h" void * emalloc(ulong n) { void *p = malloc(n); if(p == nil) sysfatal("emalloc"); memset(p, 0, n); return p; } void * erealloc(void *p, ulong n) { if ((p = realloc(p, n)) == nil) sysfatal("erealloc"); return p; } char * estrdup(char *s) { if ((s = strdup(s)) == nil) sysfatal("estrdup"); return s; } static char * illegal(char *f) { syslog(0, LOG, "illegal name: %s", f); return nil; } char * validatefile(char *f) { char *p; if(f == nil || *f == '\0') return nil; if(strcmp(f, "..") == 0 || strlen(f) >= 250) return illegal(f); for(p = f; *p; p++) if(*p < 040 || *p == '/') return illegal(f); return f; }